5243247657 has 12 divisors (see below), whose sum is σ = 7972189680. Its totient is φ = 3311524728.

The previous prime is 5243247641. The next prime is 5243247671. The reversal of 5243247657 is 7567423425.

5243247657 is a `hidden beast` number, since 524 + 3 + 2 + 4 + 76 + 57 = 666.

It is not a de Polignac number, because 5243247657 - 2⁴ = 5243247641 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5243247257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15330963 + ... + 15331304.

It is an arithmetic number, because the mean of its divisors is an integer number (664349140).

Almost surely, 2^5243247657 is an apocalyptic number.

5243247657 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

5243247657 is a deficient number, since it is larger than the sum of its proper divisors (2728942023).

5243247657 is a wasteful number, since it uses less digits than its factorization.

5243247657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30662292 (or 30662289 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 45.

The square root of 5243247657 is about 72410.2731454591. The cubic root of 5243247657 is about 1737.2678813635.

The spelling of 5243247657 in words is "five billion, two hundred forty-three million, two hundred forty-seven thousand, six hundred fifty-seven".